Supplemental Guarantor Information Condensed Consolidated Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Condensed Financial Statements, Captions [Line Items]
Acquisitions, net of cash acquired	$ (9,152)	$ (2,250)	$ (111,170)	$ (2,250)
Net Cash Provided by (Used in) Operating Activities	36,863	30,490	32,891	20,864
Capital expenditures	(23,677)	(15,356)	(41,297)	(27,292)
Purchase of short term investments and equity securities	(1,597)	(2,139)	(1,873)	(48,360)
Sales and maturities of short-term investments	399	800	469	890
Proceeds from Discontinued Operations Sale of Assets and Other	(103)	12	(1,676)	(13)
Payments to Acquire Interest in Subsidiaries and Affiliates	0	0	0	0
Net Cash Provided by (Used in) Investing Activities	(34,130)	(18,933)	(155,547)	(77,025)
Issuance of notes and bank borrowings	100,000		153,500	153,000
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(66,626)	(2,851)	(75,220)	(6,962)
Payments to Acquire Royalty Interests in Mining Properties	(9,754)	(12,345)	(20,122)	(27,028)
Proceeds From Repayment Intercompany Borrowings	0	0	0	0
Proceeds from (Payments for) Other Financing Activities	(72)	(160)	(495)	(406)
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	23,548	(15,356)	57,663	118,604
Cash and Cash Equivalents, Period Increase (Decrease)	26,281	(3,799)	(64,993)	62,443
Cash and cash equivalents at beginning of period	179,587	272,932	270,861	206,690
Cash and cash equivalents at end of period	205,868	269,133	205,868	269,133
Coeur Mining, Inc.
Condensed Financial Statements, Captions [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	(8,170)	0	(111,170)	0
Net Cash Provided by (Used in) Operating Activities	(7,793)	(35,100)	(52,711)	(72,723)
Capital expenditures	(75)	(106)	(87)	(1,051)
Purchase of short term investments and equity securities	(1,597)	(2,106)	(1,873)	(47,903)
Sales and maturities of short-term investments	13	217	12	307
Proceeds from Discontinued Operations Sale of Assets and Other	4	0	(1,764)	0
Payments to Acquire Interest in Subsidiaries and Affiliates	(27,904)	65,832	(15,683)	78,993
Net Cash Provided by (Used in) Investing Activities	(37,729)	63,837	(130,565)	30,346
Issuance of notes and bank borrowings	100,000		150,000	153,000
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(55,286)	(403)	(61,868)	(3,599)
Payments to Acquire Royalty Interests in Mining Properties	0	0	0	0
Proceeds From Repayment Intercompany Borrowings	11,703	(20,555)	9,973	(32,030)
Proceeds from (Payments for) Other Financing Activities	(72)	(160)	(495)	(406)
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	56,345	(21,118)	97,610	116,965
Cash and Cash Equivalents, Period Increase (Decrease)	10,823	7,619	(85,666)	74,588
Cash and cash equivalents at beginning of period	113,872	204,045	210,361	137,076
Cash and cash equivalents at end of period	124,695	211,664	124,695	211,664
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	(982)	(2,250)	0	(2,250)
Net Cash Provided by (Used in) Operating Activities	28,679	4,210	51,389	9,142
Capital expenditures	(11,873)	(7,945)	(19,323)	(13,615)
Purchase of short term investments and equity securities	0	(33)	0	(457)
Sales and maturities of short-term investments	386	583	386	583
Proceeds from Discontinued Operations Sale of Assets and Other	23	4	168	4
Payments to Acquire Interest in Subsidiaries and Affiliates	1,634	(121)	824	(299)
Net Cash Provided by (Used in) Investing Activities	(10,812)	(9,762)	(17,945)	(16,034)
Issuance of notes and bank borrowings	0		0	0
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(1,885)	(2,131)	(3,703)	(2,543)
Payments to Acquire Royalty Interests in Mining Properties	0	0	0	0
Proceeds From Repayment Intercompany Borrowings	5,283	7,828	(8,263)	9,343
Proceeds from (Payments for) Other Financing Activities	0	0	0	0
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	3,398	5,697	(11,966)	6,800
Cash and Cash Equivalents, Period Increase (Decrease)	21,265	145	21,478	(92)
Cash and cash equivalents at beginning of period	5,994	754	5,781	991
Cash and cash equivalents at end of period	27,259	899	27,259	899
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	0	0	0	0
Net Cash Provided by (Used in) Operating Activities	12,868	39,169	18,900	49,251
Capital expenditures	(11,729)	(7,305)	(21,887)	(12,626)
Purchase of short term investments and equity securities	0	0	0	0
Sales and maturities of short-term investments	0	0	71	0
Proceeds from Discontinued Operations Sale of Assets and Other	(130)	8	(80)	(17)
Payments to Acquire Interest in Subsidiaries and Affiliates	116	0	116	0
Net Cash Provided by (Used in) Investing Activities	(11,743)	(7,297)	(21,780)	(12,643)
Issuance of notes and bank borrowings	0		3,500	0
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(9,455)	(317)	(9,649)	(820)
Payments to Acquire Royalty Interests in Mining Properties	(9,754)	(12,345)	(20,122)	(27,028)
Proceeds From Repayment Intercompany Borrowings	11,535	(30,773)	26,811	(20,813)
Proceeds from (Payments for) Other Financing Activities	742	0	1,535	0
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	(6,932)	(43,435)	2,075	(48,661)
Cash and Cash Equivalents, Period Increase (Decrease)	(5,807)	(11,563)	(805)	(12,053)
Cash and cash equivalents at beginning of period	59,721	68,133	54,719	68,623
Cash and cash equivalents at end of period	53,914	56,570	53,914	56,570
Eliminations
Condensed Financial Statements, Captions [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	0	0	0	0
Net Cash Provided by (Used in) Operating Activities	3,109	22,211	15,313	35,194
Capital expenditures	0	0	0	0
Purchase of short term investments and equity securities	0	0	0	0
Sales and maturities of short-term investments	0	0	0	0
Proceeds from Discontinued Operations Sale of Assets and Other	0	0	0	0
Payments to Acquire Interest in Subsidiaries and Affiliates	26,154	(65,711)	14,743	(78,694)
Net Cash Provided by (Used in) Investing Activities	26,154	(65,711)	14,743	(78,694)
Issuance of notes and bank borrowings	0		0	0
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	0	0	0	0
Payments to Acquire Royalty Interests in Mining Properties	0	0	0	0
Proceeds From Repayment Intercompany Borrowings	(28,521)	43,500	(28,521)	43,500
Proceeds from (Payments for) Other Financing Activities	(742)	0	(1,535)	0
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	(29,263)	43,500	(30,056)	43,500
Cash and Cash Equivalents, Period Increase (Decrease)	0	0	0	0
Cash and cash equivalents at beginning of period	0	0	0	0
Cash and cash equivalents at end of period	$ 0	$ 0	$ 0	$ 0